Knowledge Creation for an Educational Use of Digital Libraries across Language Boundaries US-Korea Joint Workshop on Digital Libraries August 10-11, 2000

Knowledge Creation for an Educational Use of Digital

Librariesacross Language Boundaries

US-Korea Joint Workshop on Digital LibrariesAugust 10-11, 2000

Sung Hyon Myaeng

Division of Information & Communication

Chungnam National University

KOREA

http://ir.cnu.ac.kr/

Myaeng @ Chungnam National University

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Outline

General Goal

Project Goals

Virtual Document Concept & MIRAGE-III

Cross-Language IR Work

Project Goals Revisited


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General Goal

To develop core technology for providing an educational environment where research and educational materials can be searched, shared, and used creatively through internationally interoperable digital libraries


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Project Goal

Develop techniques for federated searching in multi-lingual, heterogeneous digital library (DL) environment

A digital library environment for active learning with distributed, multilingual materials (OAI-compliant)

Develop a technical basis for an OAI-compliant information gathering environment using the federated searching techniques

Extend the Virtual Document work to incorporate OAI and integrate the federated searching capability

US & Korea

US Korea


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Virtual Document Concept &

MIRAGE-III


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Motivation

DL as a Dynamic Knowledge SpaceDynamic: creation of new materials

Knowledge: inter-connection using links

Space: “distance” among objects (retrievable)

Virtual Document (vs. physical document)A document virtually exists over existing digital resources on the Internet

A way of sharing and exploiting existing information to create knowledge


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Virtual Document: Example

Van Gogh's: Masterpieces from the Van Gogh Museum, Amsterdam, will be based entirely on the holdings of the Van Gogh Museum.The exhibition will illustrate Van Gogh's entire career, from the Potato Eaters of 1885 through Wheatfield of Crows of 1890, the year of his death. It will include such famous works as the Self Portrait as an Artist (1888) The Zouav (1888), The Bedroom (1888e,) and The Harvest (1888).

Embedding, Total Link

Embedding, Partial Links

The exhibition will illustrate Van Gogh's entire career, from the Potato Eaters of 1885 through Wheatfield of Crows of 1890, the year of his death. It will include such famous works as the Self Portrait as an Artist (1888) The Zouav (1888), The Bedroom (1888e,) and The Harvest (1888).

Van Gogh

VDocInstantiation

Referential Link


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Virtual Document: Concept

Document consisting of links only.

Types of linksembedding / referential

one-to-one / one-to-many / many-to-one

specific / generic

total / partial

etc.


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One-to-One vs One-to-Many

Depending on the cardinality of the destination

Hamlet, Prince of Denmark

1. Shakespear

2. Hamlet - A Note on Sources The text of this play was acquired via Gopher from iretap.spies.com …………

English Korean

Translated by C. Park

Translated by C. Park

Translated by J. Lee

Translated by J. Lee

Translated by Y. Kim

Translated by Y. Kim

The infant William Shakespeare may have been born on this day in 1564.

And since no other day seems a likelier candidate, ..


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Generic vs Specific

Depending on the condition of the source

The infant William Shakespeare may have been born on this day in 1564. And since no other day seems a likelier candidate, ……

The infant William Shakespeare may have been born on this day in 1564. And since no other day seems a likelier candidate, ……

It is hard to believe, but once again they are new and improved.My motive in publishing these pages remains to help and stimulate others in Shakespeare studies

It is hard to believe, but once again they are new and improved.My motive in publishing these pages remains to help and stimulate others in Shakespeare studies

There are also links to the Lambs' Tales From Shakespeare (an orignal html edition mounted at this site). Near the bottom of the page I have placed ……

There are also links to the Lambs' Tales From Shakespeare (an orignal html edition mounted at this site). Near the bottom of the page I have placed ……

The Complete Works of William Shakespeare

The Complete Works of William Shakespeare

Welcome to the Web's first edition of the

Complete Works of William

Shakespeare.

The original electronic source for this server is the Complete Moby(tm) Shakespeare, which is freely available online. There may be differences between a copy of a play ……

Generic Link

About the categoriesShakespeare's plays are often arranged in three categories: tragedy, comedy, or history. ……

About the categoriesShakespeare's plays are often arranged in three categories: tragedy, comedy, or history. ……

Shakespeare Discussion AreaWelcome to the discussion pages to discuss Shakespeare and his work, to ask and answer questions, and to enliven the site.

Shakespeare Discussion AreaWelcome to the discussion pages to discuss Shakespeare and his work, to ask and answer questions, and to enliven the site.

Site 1


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Total vs Partial - Image

Total Link

Partial Link


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Total vs Partial - Video

Star Wars: Episode I

Snapshots set7

The Trade Federation army marches towards Theed

Star Wars: Episode I

Snapshots set7

The Trade Federation army marches towards Theed

Starwars.mov

Total Link

Partial LinkTime(min,sec)


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Virtual Document: Definition

A hub & a style sheet

A hub consists ofR-links (referential links)

E-links (embedding links)

Metadata (Dublin Core + index terms)


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Virtual Document: Benefits

Easy creation of composite documentslinks on read-only documents

links on semantics

Retrieval of composite and component documents

Savings in storage (and network traffic)unnecessary to copy/store large documents

linking a part of a large document


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Virtual Document: Benefits (Cont’d)

Handling multiple versions & representationswith one-to-many links

Annotating to documents with metadata“community document” & support for collaborative work

Automatic reflection of changes in participating documents


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The Architecture of MIRAGE-III

Other MIRAGE-REGULAR

RSLS SS

VDoc PDoc

`

LinkServer

Link DB Index

MetaSearcher

RetrievalServer

StorageServer

MIRAGE-REGULAR(Public DL)

MIRAGE-LITE(Personal DL)

RSLS SS

User Agent

User Agent

AuthoringTool

Client

User Agent


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Authoring Panel

Image Panel

Text Panel

Virtual Document Authoring Tool

Partial Embedding

Link

Partial Embedding

Link


18Retrieval Interface (in an ordinary way)

Input Bar

Result ListPanel

PDoc Browser

Selection

Retrieval Command


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Link Condition

Input Bar

Metadata Condition

Result ListPanel

Retrieval Command

Selection

VDoc Browser

Retrieval Interface (Link-based)


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Summary

Virtual Document Concept

Link-based Retrieval

Retrieval of Composite/Component Documents

An education and KM tool for new functionality

Personal DL / Public DL


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Further Research

Multimedia: Audio & Video

Federated Searching

Diverse formats of documents

Copyright/Ownership IssuesRight management based on DOI (Digital Object Identifier) Envisioned


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Cross-Language IR (1)

Research GoalHow far can we go with most readily available resources?

Development of a practical CLIR system

Query translation with a bilingual dictionary

Disambiguation with co-occurrence statisticsmutual information statistics in the target corpus only

selection of one or more terms + term weighting

Experiments with TREC-6


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Cross-Language IR (2)

Intermediate conclusions:Using a target corpus for disambiguation can give a reasonable performance.

We haven’t reached the upper limit.

Ongoing workDifferent disambiguation & weighting methods?

Ways to accurately translate phrases?


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Project Goal - Revisited

Develop techniques for federated searching in multi-lingual, heterogeneous digital library (DL) environment

A digital library environment for active learning with distributed, multilingual materials (OAI-compliant and others)

Develop a technical basis for an OAI-compliant information gathering environment using the federated searching techniques

Extend the Virtual Document work to incorporate OAI and integrate the federated searching capability

US & Korea

US Korea